粗粒 そりゅう玄武 げんぶ いわではありませんでした
so ryūgembuiwadewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 粗粒玄武岩

1. Was not coarse-grained basalt.

Past/Perfective
Negative
Polite
Formal Register
Geology